Mechanical chimney sweeper



Aug.' 27, 1929. K. FAHRENBACH ET A1. 1,725,980

MECHANICAL CHIMNEY SWEEPER. I

Filed Aug. 1l, 192'? 2 Sheets-Sheet l 'Illlllllllllllllllll IN VEN TOR ATTORNE Y.

Aug- 27, 1929. K. FAHRENBACH ET AL 1,725,980

- MECHANICAL CHIMNEY SWEPER Filed Aug. ll, 1927 2 Sheets-Sheet 2 I N VENTORS l f ATTRNEY.

Patented Aug. 27, 1929.

UTE STATES PATENT OFFICE.

KARL FAIIRENBACH AND WILLIAM J. FREECK, 0F MEDFORD, WISCONSIN; SELMA'FREECI/, EXECUTRIX 0F SAID WILLIAM J'. FREECK, DECEASED; SAID SELMAFREECK ASSIGNOR IO SAID FAI-IRENBACH.

MECHANICAL CI-IIMNEY SWEEPER.

Application filed August 11, 1927.

This invention relates to new and useful improvements in mechanicalchimney sweepers and consists in t-he novel features of construction,combination and arrangement of parts illustrated in the accompanying`drawings and more particularly pointed out in the appended claim.

In the accompanying drawings, which are for illustrative purposes onlyand are therefore not drawn to scale:

Figure 1 is a front sectional elevation, illustrating the application ofmy invention.

Figure 2 is a vertical longitudinal section.

Figure 3 is a plan view of the sweeper plate.

Referring to the drawings for a more particular description of myinvention and in which drawings like parts are designated by likereference characters throughout the several views, A designates thechimney and B our mechanical chimney sweeper, as a whole. Specifically,said chimney sweeper comprises a flat metal sweeper plate lsubstantially corresponding inA size to the interior dimensions of thechimney, adapted to work vertically up and down in the latter andprovided at its edges with wire brushes or bristles 2 which engage theinner walls or faces of the chimney and scrape or otherwise remove thesoot or other incrustation therefrom when the device is in operation. Asshown, the sweeper plate is provided with a rigid vertically disposedupwardly projecting hook 3, to the upper or free end of which isattached one end, as 4c, of an operating chain 5.

In carrying out our invention, this chain, after passing over a pulley 6supported at the top of the chimney by the bracket 7 fastened in placeby the thumb screws 8 or other equivalent means, passes downwardlythrough a central notch or recess 9 formed in one edge, as 10, of thesweeper plate and Serial No. 212,212.

winds upon the windlass l1 having a suitable crank handle 12candsuitably mounted beneath the ash cleaning door 13. The sweeper plate 1is provided with a plurality yof transverse openings or perforations 14Cthrough which the soot or incrustation falls during the cleaningoperation.

From the foregoing description taken in connection with the drawings, itis thought that the construction, operation and advantages of ourinvention will be readily understood without requiring a more extendedeX- planation.

Various changes in the form, proportions and minor details ofconstruction may be resorted to without departing from the principles orsacrificing any of the advantages of our invention as defined in theappended claim.

Having described our invention, what we claim as new and desire tosecure by Letters Patent, is:

A mechanical chimney sweeper comprising a Vflat perforated sweeperplate, substantially corresponding in size to the interior dimensions ofthe chimney and mounted to work vertically up and down in the latter,wire brushes attached to the respective edges of the sweeper plate andengaging the inner walls or faces of the chimney, a rigid hookprojecting upwardly from said sweeper plate, a pulley mounted at the topof the chimney, a windlass mounted at the bottom of the chimney and achain attached at one end to said hook, passing upwardly over the pulleyand thence downwardly and winding upon the windlasS, said sweeper plateprovided in one edge with a notch or recess to receive said chain.

In testimony whereof they aifiX their signatures.

KARL FAHRENBACH. WILLIAM J. FREECK.

